EN IEC 62947:2022
(Main)Electrically operated spray seats for household and similar use - Methods for measuring the performance - General test methods of spray seats
Electrically operated spray seats for household and similar use - Methods for measuring the performance - General test methods of spray seats
This International Standard specifies test methods to measure the performance of electrically operated spray seats for household and similar use. This standard applies to spray seats including tank-type spray seats, instantaneous-type spray seats and combination-type spray seats. This document does not apply to the electrically operated spray seats that are intended for medical and/or assistive functions NOTE: This International Standard does not specify acoustical noise requirements for electrical spray seats. Acoustical noise measurements are specified in IEC 60704-1 and IEC 60704-2-x.
Elektrisch betriebene Toilettensitze mit Duschfunktion für den Hausgebrauch und ähnliche Zwecke - Verfahren zur Messung der Gebrauchseigenschaften - Allgemeine Prüfverfahren für Toilettensitze mit Duschfunktion
Sièges de toilettes électriques à pulvérisation d'eau pour usages domestiques et analogues - Méthodes de mesure de l'aptitude à la fonction - Méthodes d'essai générales des sièges de toilettes à pulvérisation d'eau
L'IEC 62947-1:2022 spécifie les méthodes d'essai pour mesurer l'aptitude à la fonction des sièges de toilettes électriques à pulvérisation d'eau destinés à des usages domestiques et analogues. Le présent document s'applique aux sièges à pulvérisation, y compris les sièges à pulvérisation de type réservoir, les sièges à pulvérisation de type instantané et les sièges à pulvérisation de type combiné. Le présent document ne s'applique pas aux sièges électriques à pulvérisation destinés aux fonctions médicales et/ou d'aide à la personne. La présente Norme internationale ne spécifie pas les exigences relatives au bruit aérien qui s'appliquent aux sièges électriques à pulvérisation. Les mesures de bruit aérien sont spécifiées dans l'IEC 60704-1 et dans la série IEC 60704-2.
Električna straniščna sedala s tušem za gospodinjsko in podobno uporabo - Metode za merjenje lastnosti - Splošne preskusne metode za sedala s tušem
Ta mednarodni standard določa preskusne metode za merjenje lastnosti električnih straniščnih sedal s tušem za gospodinjsko in podobno uporabo.
Ta standard se uporablja za sedala s tušem, vključno sedali s tušem v obliki rezervoarja, sedali s tušem s takojšnjim delovanjem in kombiniranimi sedali s tušem.
Dokument se ne uporablja za električna sedala s tušem, namenjena za medicinske in/ali pomožne funkcije.
OPOMBA: Ta mednarodni standard ne določa zahtev glede zvočnega hrupa električnih sedal s tušem. Meritve zvočnega hrupa so določene v standardih IEC 60704-1 in IEC 60704-2-x.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2023
Električna straniščna sedala s tušem za gospodinjsko in podobno uporabo -
Metode za merjenje lastnosti - Splošne preskusne metode za sedala s tušem
Electrically operated spray toilet seat for household and similar use - Methods for
measuring the performance - General test methods of spray seats
Sièges de toilettes électriques à pulvérisation d'eau pour usages domestiques et
analogues - Méthodes de mesure de l'aptitude à la fonction - Méthodes d'essai
générales des sièges de toilettes à pulvérisation d'eau
Ta slovenski standard je istoveten z: EN IEC 62947:2022
ICS:
97.180 Razna oprema za dom in Miscellaneous domestic and
trgovino commercial equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 62947
NORME EUROPÉENNE
EUROPÄISCHE NORM November 2022
ICS 97.180
English Version
Electrically operated spray seats for household and similar use -
Methods for measuring the performance - General test methods
of spray seats
(IEC 62947:2022)
Sièges de toilettes électriques à pulvérisation d'eau pour Elektrisch betriebene Toilettensitze mit Duschfunktion für
usages domestiques et analogues - Méthodes de mesure den Hausgebrauch und ähnliche Zwecke - Verfahren zur
de l'aptitude à la fonction - Méthodes d'essai générales des Messung der Gebrauchseigenschaften - Allgemeine
sièges de toilettes à pulvérisation d'eau Prüfverfahren für Toilettensitze mit Duschfunktion
(IEC 62947:2022) (IEC 62947:2022)
This European Standard was approved by CENELEC on 2022-11-15. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62947:2022 E
European foreword
The text of document 59L/210/CDV, future edition 1 of IEC 62947, prepared by SC 59L "Small
household appliances" of IEC/TC 59 "Performance of household and similar electrical appliances" was
submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 62947:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-08-15
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-11-15
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62947:2022 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60456 NOTE Harmonized as EN 60456
IEC 60704-1 NOTE Harmonized as EN IEC 60704-1
IEC 60704-2 (series) NOTE Harmonized as EN 60704-2 (series)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60335-2-84 2019 Household and similar electrical appliances EN IEC 60335-2-84 2021
- Safety - Part 2-84: Particular
requirements for toilet appliances
IEC 62947 ®
Edition 1.0 2022-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electrically operated spray seats for household and similar use – Methods for
measuring the performance – General test methods of spray seats
Sièges de toilettes électriques à pulvérisation d'eau pour usages domestiques
et analogues – Méthodes de mesure de l'aptitude à la fonction – Méthodes
d'essai générales des sièges de toilettes à pulvérisation d'eau
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.180 ISBN 978-2-8322-5814-9
– 2 – IEC 62947:2022 © IEC 2022
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 General test conditions . 9
4.1 General . 9
4.2 Ambient conditions. 9
4.3 Electric supply . 10
4.4 Water supply . 10
4.5 Parameter, unit and minimum measuring accuracy of instruments . 10
5 Spray performance . 10
5.1 Spray temperature value, stability, reaction time and warm water duration . 10
5.1.1 Setup . 10
5.1.2 Measurement method . 11
5.1.3 Results . 12
5.2 Spray temperature stability under spray pressure change . 13
5.2.1 Setup . 13
5.2.2 Measurement method . 13
5.2.3 Results . 14
5.3 Spray flow rate . 15
5.3.1 Setup . 15
5.3.2 Measurement method . 15
5.3.3 Results . 15
5.4 Spray area . 16
5.4.1 Setup . 16
5.4.2 Measurement method . 18
5.4.3 Results . 19
5.5 Spray efficacy . 19
5.5.1 Setup . 19
5.5.2 Measurement method . 20
5.5.3 Results . 20
5.6 Wet area . 21
5.6.1 Setup . 21
5.6.2 Measurement method . 21
5.6.3 Results . 21
5.7 Nozzle self-cleaning . 21
5.7.1 Setup . 21
5.7.2 Measurement method . 21
5.7.3 Results . 22
6 Heated seat performance . 22
6.1 Seat surface temperature, unevenness, reaction time . 22
6.1.1 General . 22
6.1.2 Setup . 22
6.1.3 Measurement method . 23
6.1.4 Results . 24
IEC 62947:2022 © IEC 2022 – 3 –
7 Warm air blower performance . 24
7.1 General . 24
7.2 Warm air flow rate . 24
7.2.1 Setup . 24
7.2.2 Measurement method . 25
7.2.3 Results . 25
7.3 Warm air temperature . 26
7.3.1 Setup . 26
7.3.2 Measurement method . 26
7.3.3 Results . 27
7.4 Warm air blower capacity and efficacy measurement . 27
7.4.1 Setup . 27
7.4.2 Measurement method . 28
7.4.3 Results . 28
8 Energy consumption and water consumption . 29
8.1 Energy consumption . 29
8.1.1 Energy consumption of spray . 29
8.1.2 Energy consumption of heated seat . 30
8.1.3 Energy consumption of warm air blower . 31
8.2 Water consumption . 31
8.2.1 Setup . 31
8.2.2 Measurement method . 31
8.2.3 Results . 32
Annex A (normative) Preparation of test media for measuring spray performance . 33
A.1 General . 33
A.2 Composition . 33
A.3 Preparation . 33
A.4 Validation test . 34
A.5 Storage . 35
Annex B (normative) Spray receiver . 36
Annex C (normative) Preparation of the perforated plate to be filled with test media . 38
C.1 General . 38
C.2 Procedure filling the test media . 38
Annex D (informative) Low ambient temperature test . 39
D.1 Background. 39
D.2 Test method . 39
Bibliography . 40
Figure 1 – Operation during spray temperature measurement . 11
Figure 2 – Spray emission 30 s or more . 12
Figure 3 – Spray emission less than 30 s . 12
Figure 4 – Spray temperature-spray stability measurement method under spray
pressure change, minimum to maximum . 13
Figure 5 –Spray temperature-spray stability measurement method under spray
pressure change, maximum to minimum . 14
Figure 6 – Measurement of flow rate . 15
Figure 7 – Perforated plate for spray area measurement . 16
– 4 – IEC 62947:2022 © IEC 2022
Figure 8 – Jig example . 17
Figure 9 – Positioning of the frame holding the perforated plate . 18
Figure 10 – Evaluation of penetrated holes . 18
Figure 11 – Spray area and counted holes . 19
Figure 12 – Graph of spray efficacy . 20
Figure 13 – Wet area diameter . 21
Figure 14 – Marking on the nozzle . 22
Figure 15 – Measurement points . 22
Figure 16 – Reaction time measurement . 24
Figure 17 – Warm air flow rate measurement, fixed blower type . 25
Figure 18 – Warm air flow rate measurement, arm blower type . 25
Figure 19 – Warm air temperature measurement, fixed blower type . 26
Figure 20 – Warm air temperature measurement, arm blower type . 26
Figure 21 – Positioning of cylinder and rubber . 28
Figure 22 – Operation during the energy consumption test. 30
Figure A.1 – Preparing test media . 34
Figure A.2 – Setup of perforated plate and nozzle . 35
Figure A.3 – Nozzle . 35
Figure B.1 – Temperature measurement through hole . 36
Figure B.2 – Temperature measurement for very wide spray . 37
Figure B.3 – Temperature measurement for wide spray . 37
Figure C.1 – Filling test media . 38
Table 1 – Requirements for measurements . 10
Table 2 – Specifications of fabric for warm air blower capacity and efficacy
measurement . 27
Table A.1 – Test media composition . 33
Table A.2 – Validation test criteria of test media . 34
IEC 62947:2022 © IEC 2022 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICALLY OPERATED SPRAY SEATS FOR HOUSEHOLD AND
SIMILAR USE – METHODS FOR MEASURING THE PERFORMANCE –
GENERAL TEST METHODS OF SPRAY SEATS
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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6) All users should ensure that they have the latest edition of this publication.
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expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 62947 has been prepared by subcommittee 59L: Small household appliances, of IEC
technical committee 59: Performance of household and similar electrical appliances. It is an
International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
59L/210/CDV 59L/216/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
In this standard, the following print types are used:
– terms defined in Clause 3: in bold type.
– 6 – IEC 62947:2022 © IEC 2022
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.
IEC 62947:2022 © IEC 2022 – 7 –
INTRODUCTION
In recent years, spray toilet seats (hereinafter spray seats) have been used in various places,
including households and public facilities.
The International Standard currently available for these products is IEC 60335-2-84, which
covers the aspects of electrical safety.
This document covers the aspects of performance and specifies the general test methods for
the evaluation of the performance of spray seats, including the test methods using substitutes
of human faeces that take into consideration the large variety of human faeces substitutes,
based on the fact that they are different in terms of composition, and the health condition of the
user and their sitting style can have an influence on the overall performance.
– 8 – IEC 62947:2022 © IEC 2022
ELECTRICALLY OPERATED SPRAY SEATS FOR HOUSEHOLD AND
SIMILAR USE – METHODS FOR MEASURING THE PERFORMANCE –
GENERAL TEST METHODS OF SPRAY SEATS
1 Scope
This International Standard specifies test methods to measure the performance of electrically
operated spray seats for household and similar use.
This document applies to spray seats, including tank-type spray seats, instantaneous-type
spray seats and combination-type spray seats.
This document does not apply to the electrically operated spray seats that are intended for
medical and/or assistive functions
NOTE This International Standard does not specify acoustical noise requirements for electrical spray seats.
Acoustical noise measurements are specified in IEC 60704-1 and the IEC 60704-2 series.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60335-2-84:2019, Household and similar electrical appliances – Safety – Part 2-84:
Particular requirements for toilet appliances
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
spray seat
toilet seat fitted with a device that emits water to the intimate area of the human body
Note 1 to entry: Spray seats can have functions such as heating the seat, blowing warm air, deodorizing or
automatically opening/closing the seat and the bowl cover.
3.2
spray receiving point
point where the centre of the spray crosses the horizontal plane of the toilet bowl rim when the
nozzle is in its middle position.
3.3
rear spray
spray emitted to the anal area
IEC 62947:2022 © IEC 2022 – 9 –
3.4
oscillating spray function
spray emitted by moving the spray point around the initial point
3.5
pulsating spray function
spray emitted from the nozzle, with changing spray pressure at regular time intervals
3.6
warm air blower
device that blows, by an electrical heating element and fan, warm air around the wet area of
the body
3.7
rated spray angle
spray angle indicated by the manufacturer or defined by construction, which refers to the angle
between the horizontal plane and the centre of the spray
3.8
spray pressure
spray intensity perceived by the user, which does not correlate exactly with the physical
pressure value
4 General test conditions
4.1 General
The spray to be tested shall be the rear spray, not the front spray, unless otherwise specified.
The spray temperature setting shall be the maximum settable position of the heating function,
unless otherwise specified.
When the spray temperature setting needs to be set to minimum for the test, it shall be the
minimum settable temperature position (this may be unheated water).
When the spray temperature setting needs to be set to medium for the test, it shall be at the
middle position of the temperature setting.
The pressure setting shall be the maximum settable position of spray pressure.
When the spray pressure setting needs to be set to minimum for the test, it shall be the
minimum settable spray pressure position at which the spray reaches the spray receiving
point.
4.2 Ambient conditions
The tests are carried out in a draught-free location at an ambient temperature of 20 °C ± 5 °C,
unless otherwise specified. The temperature measuring point shall be 1 m above the forefront
tip of the toilet bowl rim.
For the warm air blowing feature measurements, the ambient temperature shall be 20 °C ± 1 °C
and relative humidity shall be adjusted to 50 % ± 5 %. When measuring warm air temperature,
relative humidity adjustment may be omitted.
Annex D is applicable for spray seats designed to operate at low ambient temperature, i.e.
5 °C ±1 °C.
– 10 – IEC 62947:2022 © IEC 2022
4.3 Electric supply
The supply voltage to each spray seat shall be maintained at the rated voltage ±2 % throughout
the test.
If the appliance has two or more rated voltages, or a range of rated voltages and multiple
frequencies, tests shall be conducted at the voltage and frequency used in the country of sale.
The tested voltage and frequency shall be recorded.
4.4 Water supply
The water temperature shall be 15 °C ± 2 °C, unless otherwise specified.
The gauge pressure of the laboratory supply water at the inlet to each spray seat shall be
maintained at (200 ± 20) kPa throughout the test.
The gauge pressure measurement shall be carried out under the condition that water is drained
at a flow rate of 20 l/min from the water supply connection without the spray seat connected.
4.5 Parameter, unit and minimum measuring accuracy of instruments
The characteristics of the measuring instruments shall be in accordance with Table 1.
Table 1 – Requirements for measurements
Parameter Unit Minimum resolution Instrument range of
accuracy
Temperature °C 0,1 °C ±0,5 K
Mass g 0,1 g ±2 %
Pressure kPa 1 kPa ±5 %
Force N 1mN ±6 %
Time s 1 s ±1 %
Air Velocity m/s 0 to 9,99: 0,01m/s ±2 % on indicated or
0,015 m/s, whichever is
10 to 30: 0,1 m/s
bigger
Electrical energy Wh 0,1 Wh ±1 %
Linear dimensions mm Up to 1 mm ±0,05 mm,
1 mm up to 25 mm ±0,1 mm,
25 mm and above ±0,5 %
5 Spray performance
5.1 Spray temperature value, stability, reaction time and warm water duration
5.1.1 Setup
The spray seat shall be switched on and kept on for at least 60 min to allow the temperature
of the spray seat to reach a stable state at ambient temperature.
The spray temperature is the temperature of the water measured at the spray receiving point.
For this measurement, select a spray receiver as shown in Annex B.
The spray temperature shall be measured by the thermocouple attached to the jig shown in
Annex B. The tip of thermocouple shall not touch any other materials during the measurement.
IEC 62947:2022 © IEC 2022 – 11 –
5.1.2 Measurement method
The measurement shall be conducted as follows (see Figure 1):
Allow spray seat to stabilize for 60 min for the first test and for 15 min between each test in the
series.
Start recording the measurements, wait for 60 s and open the lid fully.
Wait for 15 s (at 75 s after the start of the measurement) and activate the seating detection
sensor.
Wait for 60 s (at 135 s after the start of the measurement) and turn on the spray operation.
The spray operation shall be stopped automatically before 120 s or manually after 120 s (at 255
s after the start of the measurement)
Stop recording the measurements.
Figure 1 – Operation during spray temperature measurement
To eliminate measuring tolerance due to transient characteristics immediately after the start of
spray, the first 5 s of spray shall be disregarded.
Calculations of time value (t) shall be as follows:
• t = time when spray temperature reaches the thermocouple
• t = time n s after t
n 0
• t = range of 10 s used to evaluate temperature value
range
• t = time in the middle of t
mid range
• t = time when spray temperature measurement is terminated
x
• t = time after t to reach T
3Ka 0 3K
• t = time after t to reach T after T
3Kb 0 3K range
• T = average temperature value during t
range range
• T = temperature value (T ) − 3 °C
3K range
When the spray emission is active 30 s or more, the average temperature value (T ) shall
range
be the average of the temperature from t to t , as shown in Figure 2.
10 20
– 12 – IEC 62947:2022 © IEC 2022
When the spray emission is active less than 30 s, the temperature value (T ) shall be the
range
average of the temperature during 10 s in the middle of t and t as shown in Figure 3.
5 x
Figure 2 – Spray emission 30 s or more
Figure 3 – Spray emission less than 30 s
5.1.3 Results
The temperature value (T ) shall be the average temperature during t .
range range
• T shall be (T +T ) / 2.
range max min
• T shall be the maximum temperature during t .
max range
• T shall be the minimum temperature during t .
min range
Deviation shall be the difference between, for example, the value specified in the
manual/technical specification (if provided in °C or °F) and the calculated temperature value
T . Record the temperature according to the control panel or as specified in the manual and
range
as the outcome of the measurement.
temperature value T
range
Reaction time (t ) shall be the time elapsed after t to reach T .
3Ka 0 3K
Warm water duration of spray shall be t minus t (refer to Figure 2).
3Kb 3Ka
IEC 62947:2022 © IEC 2022 – 13 –
5.2 Spray temperature stability under spray pressure change
5.2.1 Setup
For the performance of these tests, the appliance shall be setup and operated in accordance
with 5.1.1.
5.2.2 Measurement method
The tests shall be conducted at the highest temperature setting.
The change in spray pressure shall be carried out within 1 s to clearly establish the stability of
the spray water temperature.
Detect the adjustment time of the spray pressure by measuring the time of the pressure change
of the water spray.
In order to measure spray temperature stability when changing from minimum to maximum
spray pressure, use the minimum spray pressure as the initial spray pressure and the
maximum spray pressure as the final spray pressure, as shown in Figure 4.
Figure 4 – Spray temperature-spray stability measurement method
under spray pressure change, minimum to maximum
In order to measure spray temperature stability when changing from maximum to minimum
spray pressure, use the maximum spray pressure as the initial spray pressure and the
minimum spray pressure as the final spray pressure, as shown in Figure 5.
– 14 – IEC 62947:2022 © IEC 2022
Figure 5 –Spray temperature-spray stability measurement method
under spray pressure change, maximum to minimum
The measurement shall be conducted as follows:
Allow the spray seat to stabilize for 60 min for the first test and for 15 min between each of the
tests in the series.
Adjust to the initial spray pressure and activate all sensors.
Start recording the measurement, wait for 60 s and start the spray.
Wait until temperature has stabilized (at least t + 5 s) then adjust to the final spray pressure.
3Ka
Stop spray automatically or manually 20 s after adjustment.
Stop recording the measurements.
5.2.3 Results
The following values are measured.
The average temperature of 10 s before spray pressure change.
The average temperature of 10 s after spray pressure change.
T : maximum temperature during 10 s after spray pressure change from minimum to
max-minmax
maximum
T : minimum temperature during 10 s after spray pressure change from minimum to
min-minmax
maximum
T : maximum temperature during 10 s after spray pressure change from maximum to
max-maxmin
minimum
T : minimum temperature during 10 s after spray pressure change from maximum to
min-maxmin
minimum
IEC 62947:2022 © IEC 2022 – 15 –
5.3 Spray flow rate
5.3.1 Setup
Instruments shall be placed so as to capture all the water emitted from the nozzle tip, as shown
in Figure 6. Prepare the scales to measure the weight of the water, the beaker to collect the
water, and the timer to measure the spray time.
Figure 6 – Measurement of flow rate
5.3.2 Measurement method
Measure flow rate with unheated water.
Measurement results shall be recorded in ml/min. Water volume shall be measured as mass in
g and converted into ml and recorded (1 g = 1 ml).
If there are multiple spray modes (rear spray, front spray etc.), the spray flowrate shall be
measured with each mode. Other spray features (oscillating spray function, pulsating spray
function, etc.) shall be disregarded.
The flow rates shall be measured at the maximum and minimum spray pressure settings.
To eliminate measuring tolerance due to transient characteristics immediately after the start of
spray, the first 5 s of spray shall be disregarded.
NOTE For example, the beaker used to collect water is placed in position once the first 5 s have elapsed.
The measurement shall be conducted three times for 1 min during the spray.
If the spray seat is not capable of spraying for 1 min, the outcome can be obtained by
converting the longest possible duration to a 1 min spraying duration.
5.3.3 Results
The results of the three measurements are averaged.
Each flow rate measurement in ml/min shall be indicated with the operation mode (rear spray,
front spray, etc.) and pressure (maximum and minimum).
– 16 – IEC 62947:2022 © IEC 2022
5.4 Spray area
5.4.1 Setup
For the measurement of the spray area, a perforated plate filled with test media is used to
simulate the excrement on the human body.
The perforated plates shall be made of acrylic that provides a good contrast with the test media
prepared in accordance with Annex A.
The perforated plate shall have outer dimensions of 60 mm × 70 mm and a thickness of 2 mm.
The small holes of the perforated plate shall be 1 mm in diameter. The holes shall cover a
36 mm × 59,4 mm area, and the distance between the centres of the holes shall be 0,9 mm, as
shown in Figure 7.
Dimensions in millimetres
Figure 7 – Perforated plate for spray area measurement
The perforated plate filled with test media prepared in accordance with Annex A shall be
positioned to be hit at the spray receiving point.
An example of the jig, as shown in Figure 8, is prepared, installed and adjusted as follows:
1) Prepare a transparent acrylic plate with the same outer dimensions as the perforated plate.
IEC 62947:2022 © IEC 2022 – 17 –
2) Before placing the jig, adjust the angle of the frame used for holding the perforated plate so
that the angle with reference to the horizontal plane is equal to 90°minus the rated spray
angle, and secure the frame.
3) Place a levelling gauge on the upper surface of the toilet bowl and adjust the inclination of
the toilet bowl so that the right and left directions of the toilet bowl are horizontal.
4) Installing the test jig, the right and left rods of the jig shall be parallel to the levelling gauge.
Thereafter, the jig is temporarily fixed by the three stoppers located inside the toilet bowl
opening and one stopper located outside the front of the toilet bowl.
5) Place the acrylic test plate onto the frame of the jig and secure it.
6) Start the spray operation, observe the emitted spray and adjust the jig so that the spray can
touch the centre of the test plate. Then the acrylic test plate is removed from the frame and
the perforated plate shall be set as shown in Figure 9. The centre of the test plate shall be
at the spray receiving point where the centre of the spray crosses the horizontal plane of
toilet bowl rim with the nozzle in its middle position; if there are two middle positions, select
the position at which the nozzle protrudes by more than half its travel.
7) After centring is completed, fix the jig position completely while making fine adjustments
with the stopper and the screw so that the jig remains horizontal.
8) After fixing, check again to confirm that the spray touches the centre of the test plate and
that the jig does not move horizontally.
9) Remove the perforated plate from the jig and the jig is ready for the test. When a perforated
plated filled with test media is placed, the test may be started.
10) When the test is completed, the perforated plate should be removed and washed with tap
water thoroughly to remove any residues. Then dry it with pressurized air.
Considering that the degree of dryness of the perforated plate will influence the test results, the
results of the first test using each perforated plate shall be ignored.
Figure 8 – Jig example
For preparation of the perforated plates filled with the test media, refer to Annex C.
To prevent drying of the test media, the test should be performed within 5 min after the test
media has been completely filled into the perforated plate.
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